Mensuration Services Program (MSP) · Mensuration Services Program (MSP) Programmer’s Guide for MSP Geographic Translator (GEOTRANS) ... Windows 10 operating systems, and Red Hat

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BAE Systems

10920 Technology Pl.

San Diego CA 92127

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Document No: 2100433 CAGE Code: 12436

Date: 10 May 2019

Mensuration Services Program (MSP)

Programmer’s Guide for

MSP Geographic Translator (GEOTRANS) Version 3.8

Program Title: Radiance

Contract No: HM0476-17-D-0015 CDRL: A027

DID: Contractor Format

Prepared For: National Geospatial-Intelligence Agency 7500 GEOINT Drive Springfield, VA 22150 © 2019. BAE Systems.

All rights reserved.

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Document No. 2100433 10 May 2019

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Change Log

Version Date Description of Change

01 3 December 2009 Original issue.

02 22 September 2010

Updated for release MSP GeoTrans 3.1 reflecting a change to the

supported platforms, the inclusion of static libraries in the release, the

directory of files organization, support for the EGM84 30 minute interval

geoid separation grid, the addition of sample code to the release, and

updated instructions for building on Windows.

03 06 October 2011 Updated for release MSP GeoTrans 3.2 reflecting the addition of EGM

2008.

04 23 October 2012 Updated for release MSP GeoTrans 3.3.

05 14 November 2013 Updated for release MSP GeoTrans 3.4.

06 23 October 2014 Updated for release MSP GeoTrans 3.5.

07 10 September 2015 Updated for release MSP GeoTrans 3.6.

08 18 February 2016 Updated for release MSP GeoTrans 3.7.

09 10 May 2019 Updated for release MSP GeoTrans 3.8.

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Table of Contents

1. Scope ...........................................................................................................................................1

1.1 Identification .......................................................................................................................1

1.2 System Overview ................................................................................................................1

1.3 Document Overview ...........................................................................................................2

2. Referenced Documents ...............................................................................................................3

3. Programming Environment .........................................................................................................4

3.1 Software ..............................................................................................................................4

3.1.1 Operating System(s) ...................................................................................................4

3.1.2 Compilation and Linking ...........................................................................................4

3.1.3 Directory Structure .....................................................................................................4

3.2 Hardware Requirements ......................................................................................................6

3.3 Packaging Requirements .....................................................................................................7

4. Software Support Information ....................................................................................................8

4.1 GEOTRANS Coordinate Conversion Service Software .....................................................8

4.2 GEOTRANS Application Software ..................................................................................14

4.2.1 GEOTRANS Application GUI Software .................................................................15

4.2.2 On-Line Help Source Files ......................................................................................16

4.3 Data Files ..........................................................................................................................20

4.4 Compilation/Build Procedures ..........................................................................................21

4.4.1 LINUX Compilation/Build Procedures....................................................................21

4.4.2 Windows Compilation/Build Procedures ................................................................21

4.4.3 Java Compilation/Build Procedures .........................................................................26

5. Notes .........................................................................................................................................27

5.1 Coordinate Conversion Logic ...........................................................................................27

5.2 Datum Shift Logic .............................................................................................................28

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Appendix A – ACRONYMS .........................................................................................................29

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List of Figures

Figure 4-1. CoordinateConversionService, DatumLibrary, and EllipsoidLibrary ..........................9

Figure 4-2. CoordinateConversionParameters and its Subclasses ................................................10

Figure 4-3. CoordinateTuple and its Subclasses ...........................................................................14

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1. SCOPE

1.1 IDENTIFICATION

This document is the Programmer’s Guide for Version 3.8 of the MSP Geographic Translator

(GEOTRANS).

1.2 SYSTEM OVERVIEW

GEOTRANS (Geographic Translator) is an application that allows you to convert geographic

coordinates among a wide variety of coordinate systems, map projections, grids, and datums.

GEOTRANS runs in Microsoft Windows, and LINUX environments.

The user interface of GEOTRANS consists primarily of a single window. To convert

coordinates, select the coordinate reference frame and datum in which your coordinates are

defined, enter any associated parameters, and enter the coordinates in the upper half of the

window. Then select the coordinate reference frame and datum to which you want the

coordinates to be converted, and enter any associated parameters, in the lower half of the

window. Click on the Convert Upper-to-Lower button, and the resulting coordinates will be

displayed in the lower half of the window. You can convert additional coordinate sets from the

same source by just entering the new coordinates and clicking on the Convert Upper-to-Lower

button. You can change any of the coordinate reference frame, datum, or parameter selections at

any time. Also, you can reverse the roles of input and output by using the Convert Lower-to-

Upper button. Currently, forty-one different types of coordinate systems, map projections, grids,

and coding schemes are supported, as well as more than two hundred different horizontal datums.

GEOTRANS can also be used to efficiently convert large numbers of coordinates contained in

text files. The file format is very simple. A multi-line file header defines the coordinate

reference frame and datum of the coordinates contained in the file, including any associated

parameter values. Following the header, each line contains a single set of coordinates, separated

by commas followed by at least one space. Using the GEOTRANS file processing interface, you

can select an existing file of coordinates to be converted. You can then define the coordinate

reference frame and datum to which you want to convert the coordinates, along with any

associated parameter values. Finally, you can specify the name and location of the output file

that is to be created. GEOTRANS then converts all of the coordinates in the input file and

creates the output file as a single operation.

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1.3 DOCUMENT OVERVIEW

The remainder of this document is organized as follows:

Section 2 identifies the other documents that are referenced in this Programmer’s Guide.

Section 3 describes the programming environment in which the GEOTRANS application

was developed, and summarizes the structure of the GEOTRANS application software.

Section 4 presents the as built design of the GEOTRANS application software, briefly

describing each of the components, the build procedures, and modification procedures.

Section 5 contains additional notes.

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2. REFERENCED DOCUMENTS

The following documents describe coordinate systems, map projections, coordinate conversion,

and datum transformation:

1. NGA.STND.0037_2.0.0_GRIDS, Universal Grids and Grid References Systems,

v2.0.0, 28 February 2014.

2. NGA.SIG.0012_2.0.0_UTMUPS, The Universal Grids and the Transverse Mercator

and Polar Stereographic Map Projections, v2.0.0, 25 March 2014.

3. NGA.STND.0036_1.0.0_WGS84, World Geodetic System 1984: Its Definition and

Relationship with Local Geodetic Systems, V1.0.0, 08 July 2014.

4. STANAG 2211, Geodetic Datums, ellipsoids, grids and grid references, Sixth Edition,

2001.

5. TEC-SR-7, Handbook for Transformation of Datums, Projections, Grids and

Common Coordinate Systems, 1996.

6. NGA, Department of Defense Glossary of Mapping, Charting, and Geodetic Terms,

Fourth Edition, 1981.

7. Rapp, Richard H., Geometric Geodesy - Part I; Department of Geodetic Science and

Surveying, The Ohio State University, Columbus, Ohio. 1984.

8. Rapp, Richard H., Geometric Geodesy - Part II; Department of Geodetic Science and

Surveying, The Ohio State University, Columbus, Ohio. 1987.

9. Snyder, J. P., Geological Survey Professional Paper 1395 Map Projections - A

Working Manual, 1987.

10. Federal Geographic Data Committee (FGDC), FGDC-STD-011-2001, United States

National Grid, December 2001

11. http://earth-info.nga.mil/GandG/coordsys/grids/gars.html, Global Area Reference

System (GARS)

12. NGA.SIG.0011_1.0.0_WEBMERC, Implementation Practice Web Mercator

Projection, February 18, 2014.

13. ISO/IEC 18026:2009 Information Technology - Spatial Reference Model (SRM)

http://earth-info.nga.mil/GandG/coordsys/grids/gars.html

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3. PROGRAMMING ENVIRONMENT

This section describes the programming environment in which the GEOTRANS application was

developed, and summarizes the structure of the GEOTRANS application software. It also

summarizes the hardware requirements of the GEOTRANS application software.

3.1 SOFTWARE

3.1.1 OPERATING SYSTEM(S)

The GEOTRANS software was developed and tested using the Microsoft Windows 7 and

Windows 10 operating systems, and Red Hat LINUX. It should work on all later versions of

these operating systems. The software was designed to reduce as much as possible any operating

system dependencies.

3.1.2 COMPILATION AND LINKING

The GEOTRANS Coordinate Conversion Service (CCS) was developed in C++. The Windows

version was developed and tested on the Windows 7 64-bit platform using the Microsoft Visual

Studio 2015 compiler. The Windows version was also developed and tested on the Windows 10

32-bit platform using the Microsoft Visual Studio 2015 compiler. The Windows version was

also developed and tested on the Windows 10 64-bit platform using the Microsoft Visual Studio

2015 compiler. The Linux version was developed and tested on the Red Hat Enterprise Linux

(RHEL) v7 64-bit platform using the GNU C++ compiler (GCC) v4.8.5.

The GEOTRANS application Graphical User Interface (GUI) was developed in Java. The Java

GUI was developed using the NetBeans Integrated Development Environment (IDE), available at

www.netbeans.org.

3.1.3 DIRECTORY STRUCTURE

The GEOTRANS software distribution includes all of the directories and files needed to build

and execute all versions (LINUX and Windows) of the GEOTRANS software. The

GEOTRANS software distribution consists of three top-level components:

1. The GEOTRANS Application software component is contained in a directory named

GEOTRANS3.

2. The GEOTRANS Coordinate Conversion Service software component is contained in a

directory named CCS.

http://www.netbeans.org/

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3. The GEOTRANS data files needed for initializing the GEOTRANS application are

contained in a directory named data.

4. GEOTRANS example batch input files are contained in a directory named Examples.

5. GEOTRANS test code, inputs/outputs and procedures are contained in a directory named

SpreadsheetTester.

3.1.3.1 GEOTRANS Application Component

Within the GETOTRANS3 directory, the GEOTRANS Application software component is

organized into subdirectories as follows:

docs – contains documentation for the GEOTRANS application software in Adobe

Portable Document Format (PDF).

help – contains the on-line help source files for the GEOTRANS application, including

files in HyperText Markup Language (HTML) and graphics files in Graphic Interchange

Format (GIF) format.

java_gui – contains the source code for the GEOTRANS Application graphical user

interface GUI.

linux_64 – contains the LINUX GEOTRANS jar file, the JNI CCS shared object and

archive libraries, makefile, and the runGeotrans.sh startup script.

win – contains the Windows GEOTRANS jar file, the 32-bit JNI CCS Dynamic Link

Library (DLL) and Static Linked Library (LIB), Visual C++ solution and project files, and

the runGeotrans.bat startup script.

win_64 – contains the Windows GEOTRANS jar file, the 64-bit JNI CCS Dynamic

Link Library (DLL) and Static Linked Library (LIB), Visual C++ solution and project

files, and the runGeotrans.bat startup script.

3.1.3.2 GEOTRANS Coordinate Conversion Service Component

The GEOTRANS Coordinate Conversion Service resides within the CCS directory. All input

and output angular parameters are in units of radians. The CCS supports the following types of

coordinate conversions:

Conversions between geodetic, geocentric, spherical, and local Cartesian coordinate

systems.

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Conversions between geodetic coordinates (latitude and longitude in radians) and

various types of map projection coordinates (easting and northing in linear units).

Conversions between geodetic coordinates and Military Grid Reference System

(MGRS), United States National Grid (USNG), GARS, or World Geographic

Reference System (GEOREF) grid coordinates.

Transformations of geodetic or geocentric coordinates between different global or

local horizontal datums.

Transformations between ellipsoid heights and geoid (or local MSL) heights.

Conversions that combine two or more of the above operations.

Within the CCS directory, the GEOTRANS Coordinate Conversion Service software component

is organized into subdirectories as follows:

docs – contains the CCS Application Programming Interface (API) documentation

in the form of a set of hyperlinked HTML files created using the doxygen

documentation generation tool.

src – contains the source files for the CCS component.

linux_64 – contains the LINUX CCS shared object and archive libraries, and the

makefile needed to build the CCS shared object libraries for LINUX.

win – contains the 32-bit Windows CCS DLL and LIB libraries and the Visual C++

solution and project files needed to build the CCS Windows DLL.

win_64 – contains the 64-bit Windows CCS DLL and LIB libraries and the Visual

C++ solution and project files needed to build the CCS Windows DLL.

3.1.3.3 GEOTRANS Data Component

Within the data directory are the datum and ellipsoid parameter files, and the geoid separation

grid files, required to properly initialize the GEOTRANS software.

3.2 HARDWARE REQUIREMENTS

The hardware requirements of the GEOTRANS software are minimal. It is designed to run on

any 32- or 64-bit processor with 512MB or more of memory, and 300MB or more of available

disk space.

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3.3 PACKAGING REQUIREMENTS

The GEOTRANS software is normally distributed via download from NGA’s GEOTRANS

webpage on the world wide web (WWW): http://earth-info.nga.mil/GandG/geotrans/.

Additionally, the software can be downloaded from the SIPRNet or JWICS websites, or ordered

on CD-ROM or DVD media via the MSP Help line.

SIPRNet link: http://www.geoint.nga.smil.mil/products/gandg/geotrans

JWICS link: http://www.geoint.nga.ic.gov/products/gandg/geotrans/

MSP Help via e-mail at [email protected].

http://earth-info.nga.mil/GandG/geotrans/

http://www.geoint.nga.smil.mil/products/gandg/geotrans

http://www.geoint.nga.ic.gov/products/gandg/geotrans/

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4. SOFTWARE SUPPORT INFORMATION

This section describes the as built design of the GEOTRANS software.

This section describes each of the components that make up the GEOTRANS software. The

GEOTRANS software consists of three components, as follows:

GEOTRANS Coordinate Conversion Service software is located in the CCS directory.

Sample code, makefiles and startup scripts are located in the CCS/samplecode

directory.

GEOTRANS Application software is located in the GEOTRANS3 directory.

GEOTRANS data files are located in the data directory.

Each of these components is described below.

4.1 GEOTRANS COORDINATE CONVERSION SERVICE SOFTWARE

This paragraph describes the structure and organization of the GEOTRANS Coordinate

Conversion Service software, which is located in the CCS/src directory. The CCS/src

directory is organized into subdirectories, as follows:

CoordinateConversion – contains the source code for the

CoordinateConversionService class.

dtcc – contains the DatumLibrary, EllipsoidLibrary, and GeoidLibrary classes.

These classes and the CoordinateConversionService class form the primary external

interface of the GEOTRANS Coordinate Conversion Service. They are shown in

Universal Markup Language (UML) form in Figure 4-1.

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class Coordinate Conv ersion Serv ice

CoordinateConv ersionServ ice

+ CoordinateConversionService(sourceDatumCode, sourceParameters, targetDatumCode, targetParameters) : CoordinateConversionService

+ CoordinateConversionService(ccs) : void

+ ~CoordinateConversionService() : void

+ convertSourceToTarget(sourceCoordinates, soruceAccuracy, targetCoordinates, targetAccuracy) : long

+ convertTargetToSource(targetCoordinates, targetAccuracy, sourceCoordinates, sourceAccuracy) : long

+ convertSourceToTargetCollection(sourceCoordinates, sourceAccuracy, targetCoordinates, targetAccuracy) : long

+ convertTargetToSourceCollection(targetCoordinates, targetAccuracy, sourceCoordinates, soruceAccuracy) : long

+ getEllipsoidLibrary() : EllipsoidLibrary

+ getDatumLibrary() : DatumLibrary

+ getServiceVersion() : int

+ getDatum(direction) : char

+ getCoordinateSystem(direction) : MSP::CCS::CoordinateSystemParameters

DatumLibrary

+ DatumLibrary(__datumLibraryImplementation) : void

+ DatumLibrary(d) : void

+ ~DatumLibrary() : void

+ defineDatum(datumType, code, name, ell ipsoidCode,

deltaX, deltaY, deltaZ, sigmaX, sigmaY, sigmaZ,

westLongitude, eastLongitude, southLatitude, northLatitude,

rotationX, rotationY, rotationZ, scaleFactor) : long

+ removeDatum(code) : long

+ datumCode(index, code ) : void

+ getDatumCount(count) : long

+ getDatumIndex(code, index) : long

+ getDatumInfo(index, code, name, ell ipsoidCode) : long

+ getDatumParameters(index, datumType, deltaX, deltaY,

deltaZ, sigmaX, sigmaY, sigmaZ, westLongitude,

eastLongitude, southLatitude, northLatitude, rotationX,

rotationY, rotationZ, scaleFactor) : long

+ getDatumValidRectangle(index, westLongitude,

eastLongitude, southLatitude, northLatitude) : void

+ validDatum(index, longitude, latitude, result) : void

EllipsoidLibrary

+ EllpsoidLibrary(__ellipsoidLibraryImplementation) : void

+ EllipsoidLibrary(e) : void

+ ~EllipsoidLibrary() : void

+ defineEllipsoid(code, name, semiMajorAxis, flattening) : long

+ removeEllipsoid(code) : long

+ getEllipsoidCount(count) : long

+ getEllipsoidIndex(code, index) : long

+ getEllipsoidInfo(index, code, name) : long

+ getEllipsoidParameters(index, a, f) : long

Figure 4-1. CoordinateConversionService, DatumLibrary, and EllipsoidLibrary

dtcc/CoordinateSystemParameters – contains the source code for the

abstract CoordinateSystemParameters class and all of its concrete subclasses. These

classes are shown in UML form in Figure 4-2.

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class Coordinate System Parameters

MapProjection3Parameters

+ _centralMeridian: double

+ _falseEasting: double

+ _falseNorthing: double

GeodeticParameters

+ _heightType: HeightTypeEnum



+ _originLatitude: double

+ _standardParallel1: double




LocalCartesianParameters

+ _longitude: double

+ _latitude: double

+ _height: double

+ _orientation: double

MercatorParameters


+ _latitudeOfTrueScale: double

+/ _scaleFactor: double



NeysParameters






ObliqueMercatorParameters


+ _longitude1: double

+ _latitude1: double

+ _longitude2: double

+ _latitude2: double



PolarStereogra phicParameters

+ _longitudeDownFromPole: double

+ _latitudeOfTrueScale: double











+ _scaleFactor: double



UTMPara meters

+ _zone: long

+ _override: long

CoordinateSystemParameters

+ coordinateType: CoordinateTypeEnum

EquidistantCylindricalParameters


+ _standardParallel: double



Figure 4-2. CoordinateConversionParameters and its Subclasses

dtcc/CoordinateSystems – contains the source code for the abstract

CoordinateSystem class and all of its concrete subclasses. It also contains classes for

datums and ellipsoids. It is organized into subdirectories, as follows:

albers – contains the AlbersEqualAreaConic class, which performs conversions

between geodetic coordinates and Albers Equal Area Conic projection

coordinates.

azeq – contains the AzimuthalEquidistant class, which performs conversions

between geodetic coordinates and Azimuthal Equidistant projection coordinates.

bng – contains the BritishNationalGrid class which, performs conversions

between Geodetic and Transverse Mercator projection coordinates and British

National Grid coordinates. It depends on the TransverseMercator class.

bonne – contains the Bonne class, which performs conversions between

geodetic coordinates and Bonne projection coordinates.

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cassini– contains the Cassini class, which performs conversions between

geodetic coordinates and Cassini projection coordinates.

cyleqa – contains the CylindricalEqualArea class, which performs conversions

between Geodetic coordinates and Cylindrical Equal Area projection coordinates.

datum – contains the DatumLibraryImplementation class, as well as the abstract

Datum class and its concrete subclasses. These classes provide access to datum

parameters for over 200 local datums, and perform datum transformations in

either geodetic or geocentric coordinates.

eckert4– contains the Eckert4 class, which performs conversions between

geodetic coordinates and Eckert IV projection coordinates.

eckert6– contains the Eckert6 class, which performs conversions between

geodetic coordinates and Eckert VI projection coordinates.

ellipse – contains the EllipsoidLibraryImplementation class, as well as the

Ellipsoid class. These classes provide access to ellipsoid parameters for

approximately two dozen standard ellipsoids.

eqdcyl– contains the Equidistant Cylindrical class, which performs conversions

between geodetic coordinates and Equidistant Cylindrical projection coordinates.

gars – contains the GARS class, which performs conversions between geodetic

coordinates and GARS coordinates.

geocent – contains the Geocentric class, which performs conversions between

geodetic coordinates and Geocentric coordinates.

georef – contains the GEOREF class, which performs conversions between

geodetic coordinates and GEOREF coordinates.

gnomonic – contains the Gnomonic class, which performs conversions between

geodetic coordinates and Gnomonic projection coordinates.

grinten– contains the VanDerGrinten class, performs conversions between

geodetic coordinates and Van der Grinten projection coordinates.

lambert – contains the LambertConformalConic class, which performs

conversions between geodetic coordinates and Lambert Conformal Conic

projection coordinates.

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loccart – contains the LocalCartesian class, which performs conversions

between geodetic and geocentric coordinates and Local Cartesian coordinates. It

depends on the Geocentric class.

localspher – contains the LocalSpherical class, which performs conversions

between Local Spherical coordinates and Local Cartesian coordinates. It inherits

from the LocalCartesian class.

mercator – contains the Mercator class, which performs conversions between

geodetic coordinates and Mercator projection coordinates.

mgrs – contains the MGRS class, which performs conversions between Geodetic,

UPS, and UPS coordinates and MGRS coordinates. It depends on the UPS and

UTM classes.

miller– contains the MillerCylindrical class, which performs conversions

between geodetic coordinates and Miller Cylindrical projection coordinates.

misc– contains the abstract CoordinateSystem class.

mollweid– contains the Mollweide class, which performs conversions between

geodetic coordinates and Mollweide projection coordinates.

neys – contains the Neys class, which performs conversions between geodetic

coordinates and Ney's (modified Lambert Conformal Conic) projection

coordinates.

nzmg – contains the NZMG class, which performs conversions between geodetic

coordinates and New Zealand Map Grid (NZMG) coordinates.

omerc – contains the ObliqueMercator class, which performs conversions

between geodetic coordinates and Oblique Mercator projection coordinates.

orthog– contains the Orthographic class, which performs conversions between

geodetic coordinates and Orthographic projection coordinates.

polarst – contains the PolarStereographic class, which performs conversions

between geodetic coordinates and Polar Stereographic projection coordinates.

polycon– contains the Polyconic class, which performs conversions between

geodetic coordinates and Polyconic projection coordinates.

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sinusoid– contains the Sinusoidal class, which performs conversions between

geodetic coordinates and Sinusoidal projection coordinates.

spherical– contains the Spherical class, which performs conversions between

geocentric coordinates and Spherical coordinates. It inherits from the Geocentric

class.

stereogr – contains the Stereographic class, which performs conversions

between geodetic coordinates and Stereographic projection coordinates.

threads – contains the Threads class.

tranmerc – contains the TransverseMercator class, which performs conversions

between geodetic coordinates and Transverse Mercator projection coordinates.

trcyleqa – contains the TransverseCylindricalEqualArea class, which performs

conversions between geodetic coordinates and Transverse Cylindrical Equal Area

projection coordinates.

ups – contains the UPS class, which performs conversions between geodetic

coordinates and Universal Polar Stereographic projection coordinates. It depends

on the POLAR STEREOGRAPHIC module.

usng – contains the USNG class, which performs conversions between Geodetic,

UPS, and UPS coordinates and USNG coordinates. It depends on the UPS and

UTM class.

utm – contains the UTM class, which performs conversions between geodetic

coordinates and Universal Transverse Mercator projection coordinates. It depends

on the TransverseMercator class.

webmercator – contains the WebMercator class, which performs conversions

from Web Mercator coordinates to Geodetic coordinates. The transform from

Geodetic to Web Mercator is not supported since NGA wants to discourage the

use of Web Mercator.

dtcc/CoordinateTuples – contains the source code for the abstract

CoordinateTuple class and all of its concrete subclasses, as well as the Accuracy

class. These classes are shown in Figure 4-3.

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Figure 4-3. CoordinateTuple and its Subclasses

dtcc/Enumerations – contains the various enumerations used by the CCS

component. Note that the Precision enum meaning depends on the usage context.

When used with a coordinate system expressed in degrees latitude and longitude its

meaning is consistent with the enumeration values. When used with a coordinate

system expressed in meters (e.g., MGRS) the meaning is metric units. For example,

Precision enum value degree = 100km, tenMinute = 10km, and so forth down to

tenThousandthOfSecond = 1mm.

dtcc/Exception – contains the source code for the

CoordinateConversionException class, as well as for the associated error and warning

messages.

4.2 GEOTRANS APPLICATION SOFTWARE

This paragraph describes the structure and organization of the GEOTRANS Application GUI

software, which is located in the GEOTRANS3 directory. It includes the GEOTRANS

Application GUI source code, which is located in the GEOTRANS3/java_gui/geotrans3

subdirectory, and the on-line help files, which are located in the GEOTRANS3/help

subdirectory.

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4.2.1 GEOTRANS APPLICATION GUI SOFTWARE

The GEOTRANS Application GUI software was generated using the NetBeans IDE, available at

www.netbeans.org. The GEOTRANS Application GUI software is organized into subdirectories

as follows:

coordinates – contains the source code for the Java abstract CoordinateTuple

class and all of its concrete subclasses, as well as the Accuracy and ConvertResults

classes.

enumerations – contains the source code for the Java classes that implement the

various enumerations used by the GEOTRANS application. Note that the Precision

enum meaning depends on the usage context. When used with a coordinate system

expressed in degrees latitude and longitude, its meaning is consistent with the

enumeration values. When used with a coordinate system expressed in meters (e.g.,

MGRS) the meaning is metric units. For example, Precision enum value degree =

100km, tenMinute = 10km, and so forth down to tenThousandthOfSecond = 1mm.

exception – contains the source code for the Java classes that allow the application

to handle exceptions thrown by the Coordinate Conversion Service.

gui – contains the source code for the Java classes that implement the actual GUI

components and controls, including the various control panels and dialog boxes.

jni – contains the source code for the Java and C++ classes that implement a Java

Native Interface (JNI) for the GEOTRANS Coordinate Conversion Service

component.

misc – contains a collection of miscellaneous Java support classes dealing with

geodetic coordinate formatting options, conversion between character strings and

coordinate values, loading and saving option settings, etc.

parameters – contains the source code for the Java abstract

CoordinateSystemParameters class and all of its concrete subclasses.

utility – contains a collection of utility Java classes dealing with platforms,

environment variables, directories and files, constants, and the on-line help browser

interface.


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4.2.2 ON-LINE HELP SOURCE FILES

This paragraph describes the structure and organization of the On-Line Help source files, which

are contained in the GEOTRANS3/help subdirectory. The source files are of two types. Files

with the extension “.htm” are source files in Hyper Text Markup Language (HTML) which

contain formatted text for one or more on-line help topics. Files with the extension “.gif” are

graphics files, which contain the graphic images used in the on-line help topics. The On-Line

Help source files consist of the following modules:

Basic Operations (file basicops.htm) – describes the basic interactive operation of

the GEOTRANS application.

Contents (file contents.htm) – contains the top-level table of contents for the on-line

help.

Coordinate System Descriptions (file coordDescriptions.htm) – contains detailed

descriptions of the various types of coordinate systems supported by the GEOTRANS

application, including references to the following graphics:

Geodetic & Geocentric Coordinates (file geodetic.gif) – graphic showing the

relationship between geodetic and geocentric coordinate systems (Figure 4.2 from

TEC-SR-7).

Spherical Coordinates (file spherical.gif) – graphic shows the relationship between

geocentric spherical and geocentric coordinate systems.

Local Spherical Coordinates (file locspher.gif) – graphic showing the relationship

between local spherical and local cartesian coordinate systems.

GEOREF 15° Grid (file georef1.gif) – graphic showing the high-level 15°

GEOREF grid.

GEOREF 1° Grid (file georef2.gif) – graphic showing the low-level 1°

GEOREF grid.

MGRS Zones (file mgrs_zones.gif) – graphic showing the MGRS zones.

MGRS 100,000m Square Designations (AL Pattern) (file mgrs_al.gif) – graphic

showing the patterns of MGRS 100,000m Square Designations used with the Clarke

1866, Clarke 1880, and Bessel 1841 ellipsoids.

MGRS 100,000m Square Designations (AA Pattern) (file mgrs_aa.gif) – graphic

showing the patterns of MGRS 100,000m Square Designations used with all other

ellipsoids.

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MGRS 100,000m Square Designations for North Polar Zone (file mgrs_n.gif) –

graphic showing the patterns of MGRS 100,000m Square Designations in the north

polar zone.

MGRS 100,000m Square Designations for South Polar Zone (file mgrs_s.gif) –

graphic showing the patterns of MGRS 100,000m Square Designations in the south

polar zone.

Coordinate Systems (file coordsys.htm) – contains brief descriptions of the various

types of coordinate systems and map projections supported by the GEOTRANS

application.

Create Datum Dialog (file createDatumDlg.htm) – contains a description of the

Create Datum dialog box.

Create Ellipsoid Dialog (file createEllipsoidDlg.htm) – contains a description of

the Create Ellipsoid dialog box.

Datum Table (file datum1.htm) – contains a table of countries and geographic areas,

identifying which local datums are applicable to each.

Delete Datum Dialog (file deleteDatumDlg.htm) – contains a description of the

Delete Datum dialog box.

Delete Ellipsoid Dialog (file deleteEllipsoidDlg.htm) – contains a description of

the Delete Ellipsoid dialog box.

Ellipsoid Table (file elliptab.htm) – contains a table of standard ellipsoids and their

parameters.

Error Messages (file errors.htm) – contains descriptions of the error messages that

may be output by the GEOTRANS application.

Fields (file fields.htm) – contains descriptions of all of the fields and controls

included in the graphical user interface of the GEOTRANS application.

File Format (file fileform.htm) – contains a description of the format of the ASCII

coordinate files read and created by the GEOTRANS application.

File Format (file fileHeader.htm) – contains a description of the GEOTRANS

Create File Header command.

File Format (file fileHeaderWindow.htm) – contains a description of the Create

File Header window.

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File Open Dialog (file fileOpenDlg.htm) – contains a description of the File Open

dialog box.

File Processing (file fileproc.htm) – describes how to use the file processing

capabilities of the GEOTRANS application.

File Processing Dialog (file fileProcessingDlg.htm) – contains a description of

the File Processing dialog box.

File Processing Window (file fileProcessingWindow.htm) – contains a

description of the File Processing window.

Glossary (file glossary.htm) – contains the definitions of general Mapping, Charting

and Geodesy (MC&G) terms that are used in describing the GEOTRANS application.

Main Window (file mainWindow.htm) – contains a description of the GEOTRANS

application main window.

Menu Commands (file menubar.htm) – contains descriptions of all of the menu

commands provided by the menu bar in the GEOTRANS main window.

Overview (file overview.htm) – contains an overview of the GEOTRANS

application.

Projection Descriptions (file projectionDescriptions.htm) – contains detailed

descriptions of the various types of map projections supported by the GEOTRANS

application, including references to the following graphics:

Mercator Projection (file mercator.gif) – graphic showing the Mercator

projection.

Transverse Mercator Projection (file transmerc.gif) – graphic showing the

Transverse Mercator projection.

UTM Projection (file utm.gif) – graphic showing meridians and parallels and a

Universal Transverse Mercator grid (Figure 7.3 from TEC-SR-7).

Polar Stereographic Projection (file polarst.gif) – graphic showing meridians

and parallels in a Polar Stereographic projection (Figure 7.4 from TEC-SR-7).

UPS Projection (file ups.gif) – graphic showing meridians and parallels on the

Universal Polar Stereographic grid (Figure 7.6 from TEC-SR-7).

Albers Equal Area Conic projection (file albers.gif) – graphic showing an

Albers Equal Area Conic projection.

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Azimuthal Equidistant projection (file azeq.gif) – graphic showing an Azimuthal

Equidistant projection.

Bonne projection (file bonne.gif) – graphic showing a Bonne projection.

British National Grid (file bng.gif) – graphic showing the British National Grid.

Cassini projection (file cassini.gif) – graphic showing a Cassini projection.

Cylindrical Equal Area projection (file cyleqa.gif) – graphic showing a

Cylindrical Equal Area projection.

Eckert IV projection (file eckert4.gif) – graphic showing an Eckert IV

projection.

Eckert VI projection (file eckert6.gif) – graphic showing an Eckert VI

projection.

Equidistant Cylindrical projection (file eqdcyl.gif) – graphic showing an

Equidistant Cylindrical projection.

Gnomonic projection (file gnomonic.gif) – graphic showing a Gnomonic

projection.

Lambert Conformal Conic (1 parallel) Projection (file lambert_1.gif) – graphic

showing a Lambert Conformal Conic (1 parallel) projection.

Lambert Conformal Conic (2 parallel) Projection (file lambert_2.gif) – graphic

showing a Lambert Conformal Conic (2 parallel) projection.

Miller Cylindrical projection (file miller.gif) – graphic showing a Miller

Cylindrical projection.

Mollweide projection (file mollweid.gif) – graphic showing a Mollweide

projection.

Ney’s Projection (file neys71.gif) – graphic showing Ney’s projection.

New Zealand Map Grid (file nzmg.gif) – graphic showing the New Zealand Map

Grid.

Oblique Mercator projection (file omerc.gif) – graphic showing an Oblique

Mercator projection.

Orthographic projection (file ortho.gif) – graphic showing a Orthographic

projection.

Polyconic projection (file polyconic.gif) – graphic showing a Polyconic

projection.

Sinusoidal projection (file sinusoidal.gif) – graphic showing a Sinusoidal

projection.

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Stereographic projection (file stereogr.gif) – graphic showing a Stereographic

projection.

Transverse Cylindrical Equal Area projection (file trcyleqa.gif) – graphic

showing a Transverse Cylindrical Equal Area projection.

Van der Grinten projection (file grinten.gif) – graphic showing a Van der

Grinten projection.

Save As Dialog (file saveAsDlg.htm) – contains a description of the Save As dialog

box.

4.3 DATA FILES

GEOTRANS requires several data files that contain datum, ellipsoid, and geoid separation

information. The following data files are normally located in the data directory, and

GEOTRANS looks for them there by default:

3_param.dat – the data file containing the datum shift parameters for 3-parameter

local datums.

7_param.dat – the data file containing the datum shift parameters for 7-parameter

local datums.

Und_min2.5x2.5_egm2008_WGS84_TideFree_reformatted – the data file

containing the Earth Gravity Model 2008 (EGM2008) geoid separation values at 2.5

minute intervals.

egm96.grd – the data file containing the Earth Gravity Model 1996 (EGM96) geoid

separation values at 15 minute intervals.

egm84.grd – the data file containing the Earth Gravity Model 1984 (EGM84) geoid

separation values at 10 degree intervals.

wwgrid.bin – the data file containing the Earth Gravity Model 1984 (EGM84) geoid

separation values at 30 minute intervals.

ellips.dat – the data file containing the standard ellipsoid parameters.

As an alternative, you can define the environment variable MSPCCS_DATA, and place the files

in the directory identified by this variable.

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4.4 COMPILATION/BUILD PROCEDURES

The GEOTRANS executable directories: GEOTRANS3/linux_64, GEOTRANS3/win and

GEOTRANS3/win_64, each contain required library files, executables for the GEOTRANS

application, makefiles, and other supporting files.

4.4.1 LINUX COMPILATION/BUILD PROCEDURES

The CCS LINUX library directory, CCS/linux_64, contains the CCS shared objects and

makefile.

To make the LINUX dtcc library, type:

%make libMSPdtcc.so

To make the LINUX Coordinate Conversion Service library, type:

%make libMSPCoordinateConversionService.so

The GEOTRANS LINUX executable directory, GEOTRANS3/linux_64, contains the

executable, makefile, and supporting files.

To make the LINUX GEOTRANS Java Native Interface (JNI) shared object library, type:

%make libjnimsp_ccs.so

To delete unneeded files created during the build process, type:

%make clean

Note: The dtcc and Coordinate Conversion Service libraries should be built before trying to

build the GEOTRANS JNI shared object library.

4.4.2 WINDOWS COMPILATION/BUILD PROCEDURES

The CCS Windows library directory, CCS/win or CCS/win_64, contains the CCS libraries and

Microsoft Visual Studio 2015 solution and projects.

The GEOTRANS Windows executable directory, GEOTRANS3/win or

GEOTRANS3/win_64, contains the GEOTRANS executable, Microsoft Visual Studio 2015

solution, projects, and supporting files.

To build the GEOTRANS Windows DLLs, start up the Microsoft Visual Studio 2015 and open

the CCS/win/MSP_CCS.sln or CCS/win_64/MSP_CCS.sln solution file. In the

Solution Explorer window, select the project to be built. The two projects are MSP_DTCC,

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which builds the dtcc DLL, and MSP_CCS, which builds the Coordinate Conversion Service

DLL. Then, from the Build pop-up menu, select the Build command.

The C++ include directories for the MSP_DTCC project are as follows:

..\..\..\CCS\src\dtcc\CoordinateSystems\datum

../src/dtcc

../src/CoordinateConversion

../src/dtcc/CoordinateSystemParameters

../src/dtcc/CoordinateTuples

../src/dtcc/Enumerations

../src/dtcc/CoordinateSystems/misc

../src/dtcc/CoordinateSystems/datum

../src/dtcc/CoordinateSystems/ellipse

../src/dtcc/CoordinateSystems/albers

../src/dtcc/CoordinateSystems/azeq

../src/dtcc/CoordinateSystems/bng

../src/dtcc/CoordinateSystems/bonne

../src/dtcc/CoordinateSystems/cassini

../src/dtcc/CoordinateSystems/cyleqa

../src/dtcc/CoordinateSystems/eckert4


../src/dtcc/CoordinateSystems/eqdcyl

../src/dtcc/CoordinateSystems/gars

../src/dtcc/CoordinateSystems/geocent

../src/dtcc/CoordinateSystems/georef

../src/dtcc/CoordinateSystems/gnomonic

../src/dtcc/CoordinateSystems/grinten

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../src/dtcc/CoordinateSystems/lambert

../src/dtcc/CoordinateSystems/loccart

../src/dtcc/CoordinateSystems/locspher

../src/dtcc/CoordinateSystems/Mercator

../src/dtcc/CoordinateSystems/mgrs

../src/dtcc/CoordinateSystems/miller

../src/dtcc/CoordinateSystems/mollweid

../src/dtcc/CoordinateSystems/neys

../src/dtcc/CoordinateSystems/nzmg

../src/dtcc/CoordinateSystems/omerc

../src/dtcc/CoordinateSystems/orthogr

../src/dtcc/CoordinateSystems/polarst

../src/dtcc/CoordinateSystems/polycon

../src/dtcc/CoordinateSystems/sinusoid

../src/dtcc/CoordinateSystems/spherical

../src/dtcc/CoordinateSystems/stereogr

../src/dtcc/CoordinateSystems/threads

../src/dtcc/CoordinateSystems/tranmerc

../src/dtcc/CoordinateSystems/trcyleqa

../src/dtcc/CoordinateSystems/ups

../src/dtcc/CoordinateSystems/usng

../src/dtcc/CoordinateSystems/utm

../src/dtcc/Exception.

The C++ include directories for the MSP_CCS project are as follows:

../src/dtcc

../src/CoordinateConversion

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../src/dtcc/CoordinateSystemParameters

../src/dtcc/CoordinateTuples

../src/dtcc/Enumerations

../src/dtcc/CoordinateSystems/misc

../src/dtcc/CoordinateSystems/datum

../src/dtcc/CoordinateSystems/ellipse

../src/dtcc/CoordinateSystems/albers

../src/dtcc/CoordinateSystems/azeq

../src/dtcc/CoordinateSystems/bng

../src/dtcc/CoordinateSystems/bonne

../src/dtcc/CoordinateSystems/cassini

../src/dtcc/CoordinateSystems/cyleqa



../src/dtcc/CoordinateSystems/eqdcyl

../src/dtcc/CoordinateSystems/gars

../src/dtcc/CoordinateSystems/geocent

../src/dtcc/CoordinateSystems/georef

../src/dtcc/CoordinateSystems/gnomonic

../src/dtcc/CoordinateSystems/grinten

../src/dtcc/CoordinateSystems/lambert

../src/dtcc/CoordinateSystems/loccart

../src/dtcc/CoordinateSystems/locspher

../src/dtcc/CoordinateSystems/mercator

../src/dtcc/CoordinateSystems/mgrs

../src/dtcc/CoordinateSystems/miller

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../src/dtcc/CoordinateSystems/mollweid

../src/dtcc/CoordinateSystems/neys

../src/dtcc/CoordinateSystems/nzmg

../src/dtcc/CoordinateSystems/omerc

../src/dtcc/CoordinateSystems/orthogr

../src/dtcc/CoordinateSystems/polarst

../src/dtcc/CoordinateSystems/polycon

../src/dtcc/CoordinateSystems/sinusoid

../src/dtcc/CoordinateSystems/spherical

../src/dtcc/CoordinateSystems/stereogr

../src/dtcc/CoordinateSystems/threads

../src/dtcc/CoordinateSystems/tranmerc

../src/dtcc/CoordinateSystems/trcyleqa

../src/dtcc/CoordinateSystems/ups

../src/dtcc/CoordinateSystems/usng

../src/dtcc/CoordinateSystems/utm

../src/dtcc/Exception

The GEOTRANS Java Native Interface DLL that supports the GEOTRANS Java GUI is built

using the jnigeotrans solution. The one project is jnigeotrans, which builds the jnimsp_ccs

DLL.

The C++ include directories for the jnigeotrans project are as follows:

..\..\..\..\include\win32

..\..\..\..\include

..\..\CCS\src\dtcc\CoordinateSystems\datum

..\..\CCS\src\dtcc\CoordinateSystems\ellipse

..\..\CCS\src\dtcc\Exception

..\..\CCS\src\CoordinateConversion

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..\..\CCS\src\dtcc

..\..\CCS\src\dtcc\CoordinateSystemParameters

..\..\CCS\src\dtcc\CoordinateSystems\mercator

..\..\CCS\src\dtcc\CoordinateSystems\misc

..\..\CCS\src\dtcc\CoordinateTuples

..\..\CCS\src\dtcc\Enumerations

NOTE: Make sure to set environment variable MSPCCS_DATA when running in debug mode

using the Visual Studio 2015 IDE. For example, in the MSPCCS_SpreadsheetTester project

select Project->Properties. In the Property Pages window select debugging, then Environment.

Enter the following text in the Environment window:

MSPCCS_DATA=..\..\data

PATH=..\..\CCS\win;.;%PATH% REM 32-bit

PATH=..\..\CCS\win_64;.;%PATH% REM 64-bit

4.4.3 JAVA COMPILATION/BUILD PROCEDURES

To compile and build the GEOTRANS Java files, start up NetBeans IDE, available at

www.netbeans.org. Create a project for the /GEOTRANS3/java_gui directory in the

filesystems explorer window by going to the File pull-down menu and selecting New Project.

Select Java under Categories and Java Project with Existing Sources under Projects. Click

the Next button. Type a Project Name and the Project Folder where you would like the project

files to be. Under Source Package Folders, navigate to the /GEOTRANS3/java_gui directory

and click the Open button. Click the Next button. Click the Finish button. Within the Projects

window, right click on the project name. Select the Build command from the menu shown.

Next, edit the GEOTRANS Java archive (jar) file properties. First, click on the Files tab.

Double click on Manifest.mf and insert the following line, Main-Class:

geotrans3/MSP_GEOTRANS3. Next, click on nbproject under the GEOTRANS directory tree.

Double click on project.properties. On the dist.jar line, type the directory and name of the jar

file. The jar file is automatically created when the project is built.


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5. NOTES

This section contains notes on aspects of the GEOTRANS software. Paragraph 5.1 discusses the

coordinate conversion logic that is implemented by the GEOTRANS Coordinate Conversion

Service. Paragraph 5.2 summarizes the datum transformation logic.

5.1 COORDINATE CONVERSION LOGIC

The function Convert in the GEOTRANS Coordinate Conversion Service component is the heart

of the GEOTRANS software. It is this function that actually performs all coordinate conversions

and datum shifts. Given the input and output datums, the input and output coordinate reference

frames, including the values of any projection parameters, and the input coordinates, it produces

the output coordinates.

Although the source code for this function is quite long, its structure is relatively simple,

consisting of nested if and switch statements. The code blocks that perform individual

coordinate conversion and datum shift steps are quite short. Several special cases are handled

initially to avoid unnecessary conversions.

The general case is handled in three stages:

1. Convert the input coordinates from the input coordinate reference frame to geodetic.

2. Shift the intermediate geodetic coordinates from the input datum to the output datum,

converting between ellipsoid and geoid/MSL heights if necessary.

3. Convert the shifted intermediate geodetic coordinates to the output coordinate reference

frame.

The first stage is accomplished by a switch statement on the input coordinate reference frame,

with a case for each of the coordinate reference frames supported. If the input coordinates are

already in geodetic, they are simply copied to the intermediate coordinates.

The second stage is accomplished in three steps. First, the intermediate geodetic coordinates are

shifted to WGS 84, if necessary. Second, if the input geodetic coordinates included an ellipsoid

height and the output geodetic coordinates require a geoid/MSL height, or vice versa, the geoid

separation is either added to or subtracted from the height, as appropriate. Note that if either the

input or the output was projected, the geodetic height is considered meaningless, and the output

height is forced to zero. Third, the shifted intermediate geodetic coordinates are shifted to the

output datum.

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The third stage is similar to the first stage. A switch statement on the output coordinate reference

frame, with a case for each of the coordinate reference frames supported, is used to convert the

shifted intermediate geodetic coordinates to the output coordinate reference frame. If the output

coordinate reference frame is geodetic, the shifted intermediate coordinates are simply copied to

the output coordinates.

5.2 DATUM SHIFT LOGIC

Normally, a datum shift is performed in two stages: from the input datum to WGS 84, and then

from WGS 84 to the output datum. If either the input datum or the output datum is WGS 84,

then one or both of these stages will be skipped.

The methods used depend on the types of the input and output datums, and, in some cases, on the

location of the coordinates being shifted. The datums are organized into the following

categories:

WGS 84

WGS 72

3-parameter datums – local datums which are defined in the file 3-param.dat, and

which have three datum shift parameters (delta X, delta Y, delta Z).

7-parameter datums – local datums which are defined in the file 7-param.dat, and

which have seven datum shift parameters (delta X, delta Y, delta Z, X rotation, Y

rotation, Z rotation, and scale factor).

Each of the 7-parameter datums (EUR-7 and OGB-7) also have 3-parameter versions (EUR-M

and OGB-M). Distinct codes have been defined for these so that it is always clear which set of

datum shift parameters should be used.

Four datum shift methods are used, as follows:

72-to-84 (and its inverse 84-to-72) – Used to shift between WGS 72 and WGS 84 in

geodetic coordinates.

Molodensky method – Used to shift between 3-parameter datums and WGS 84 in

geodetic coordinates, except in the polar regions, where it is not valid.

3-parameter method – Used to shift between 3-parameter datums and WGS 84 in

geocentric coordinates.

7-parameter method – Used to shift between 7-parameter datums and WGS 84 in

geocentric coordinates.

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APPENDIX A – ACRONYMS

API Application Programming Interface

CCS Coordinate Conversion Service

CD-ROM Compact Disk – Read Only Memory

DLL Dynamic Linked Library (Windows)

EGM Earth Gravity Model

GARS Global Area Reference System

GCC Gnu C++ Compiler

GEOREF Geographic Reference System

GEOTRANS Geographic Translator

GIF Graphics Interchange Format

GUI Graphical User Interface

HTML HyperText Markup Language

IDE Integrated Development Environment

JNI Java Native Interface

LIB Static Linked Library (Windows)

MGRS Military Grid Reference System

MSL Mean Sea Level

MSP Mensuration Services Program

NGA National Geospatial-Intelligence Agency

NZMG New Zealand Map Grid

RHEL Red Hat Enterprise Linux

UML Universal Markup Language

UPS Universal Polar Stereographic

USNG United States National Grid

UTM Universal Transverse Mercator

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WGS World Geodetic System

WWW World Wide Web